Here in La La land, we have some new fangled dangled red light changer on each set of lights, that change on activation by an emergency vehicle. It appears to work[most of the time?], because the traffic is held, vacating and giving green [GO] to the said hurry up vehicle. Tho some vehicles, do not yet comprehend, and they start the failed red light routine, not seeing the gala of lights or hearing the hells chorus, their own light and sound system is at Fool Blast+ [Tad hi may be but some do not have 'ears]. Any rumours that you will try out the system, of course the Mall and Q's BP will get it first for the busby mob. dung beetle.